CNN reports: Edwin "Buzz" Aldrin, who became the second person to ever set foot on the moon in 1969, following crewmate Neil Armstrong, married his "longtime love" on his 93rd birthday on Friday.

The former astronaut announced his nuptials on Twitter.... "We were joined in holy matrimony in a small private ceremony in Los Angeles & are as excited as eloping teenagers...." Aldin also thanked fans for their birthday wishes in another Friday tweet. "It means a lot and I hope to continue serving a greater cause for many more revolutions around the sun," he wrote.

NASA's plans for a presence on the moon "will allow the program to practice how to live in space sustainably," writes the Washington Post. "It will allow scientists to tap into the moon's considerable scientific value to learn more about how Earth was formed. And perhaps, it would also serve as a steppingstone to Mars and other deep-space destinations years in the future."

First, unlike in the 1960s — we now know that the moon has water. Water is not only key to sustaining human life, but its component parts — hydrogen and oxygen — can be used as rocket propellant, making the moon a gas station in space. That could be critical for long-duration missions, allowing spacecraft to refuel on the moon instead of lugging all the fuel from Earth. And since the moon's gravity is one-sixth of Earth's, it is a relatively easy springboard to other points of the solar system.
NASA is also considering building a nuclear reactor on the moon: It's one of several initiatives NASA has begun under its Artemis program, designed to help astronauts stay for extended periods when they'll need power, transportation and the ability to use the moon's resources.... The effort is still very much in its nascent stages, and the funding NASA would need for the long term has not materialized in full.... A sustainable presence, despite the rosy predictions coming from the top echelons of the agency, is still years away, and the technical challenges are immense.

But NASA has begun developing the technologies that would be needed to sustain astronauts on the surface for extended periods. In June of last year, the agency and the Energy Department awarded contracts, worth $5 million each, to three companies to develop nuclear power systems that could be ready to launch by the end of the decade for a test on the moon. The systems would generate 40 kilowatts of power, enough energy to power six or seven American households, and last about 10 years....

NASA is also looking to build solar farms, using arrays that point vertically and catch the angle of the sun over the horizon. And it's exploring how best to exploit what are called "in situ resources" — meaning those that already exist, such as the regolith.
The article even broaches the idea of "a lunar economy that would help sustain a permanent presence."

South Korea's Korea Pathfinder Lunar Orbiter spacecraft, known as Danuri, has sent back some high-resolution images from the moon. The Korea Aerospace Research Institute shared the views on Twitter this week. CNET reports: The first two come from late December and show the cratered landscape of the moon with Earth peeking above the horizon. The images are reminiscent of Earthrise views seen from NASA's Apollo and Artemis missions. KARI shared a second set of Earth images snapped during the new year.

Walt Cunningham, one of the early Apollo astronauts, died Tuesday after complications from a fall. He was 90. NPR reports: Walt Cunningham flew in space just one time. His flight in 1968 was an important -- and often forgotten one -- for the lunar program. Cunningham was the lunar module pilot of the first manned Apollo mission that went to space. Apollo 7's 11-day trip around the Earth was a key stepping stone to NASA's march to the moon. "The real accomplishment, of course, was the first manned landing on the moon," Cunningham told NPR in 2016. "But that was the fifth of what I've always described as five giant steps. The first one was the Apollo 7 mission, of course. Complete test of the Apollo spacecraft."

The launch came after a difficult time for NASA. Just 21 months before, a fire on the launchpad killed three astronauts during a test of Apollo 1. In the interim, NASA changed many procedures and the command module underwent a series of safety improvements. Cunningham said in 2016 that if Apollo 7 had not gone well, the U.S. wouldn't have landed on the moon before the end of the 1960s. "Historically, what the public doesn't realize," he said, "It is still the longest, most ambitious, most successful first test flight of any new flying machine ever."

"There were so many things that had to be tested," he recalled. During the flight, the crew test-fired the engine that would place Apollo into and out of lunar orbit, simulated docking maneuvers and did the first-ever live television broadcast from an American spacecraft. "It was hard to imagine that we could get through all those things [in an 11-day mission] without something going wrong and saying, 'hey you need to gotta come home," Cunningham said. The mission was deemed a success but it was the last time these astronauts would fly in space. There was tension between Apollo 7's commander, Wally Schirra, and mission control. As the flight dragged on, Schirra caught a cold and so did astronaut Donn Eisele and the crew's squabbles worsened with ground controllers. Despite that, Cunningham said, "As I look back on it, it was a job, a challenge, and a task that in the end was very well done."

"Last week at the 2022 American Geophysical Union (AGU) Fall Meeting, planetary scientists and astronomers discussed how new machine-learning techniques are changing the way we learn about our solar system," reports Space.com, "from planning for future mission landings on Jupiter's icy moon Europa to identifying volcanoes on tiny Mercury...." For many tasks in astronomy, it can take humans months, years or even decades of effort to sift through all the necessary data... "You can find up to 10,000, hundreds of thousands of boulders, and it's very time consuming," Nils Prieur, a planetary scientist at Stanford University in California said during his talk at AGU. Prieur's new machine-learning algorithm can detect boulders across the whole moon in only 30 minutes. It's important to know where these large chunks of rock are to make sure new missions can land safely at their destinations. Boulders are also useful for geology, providing clues to how impacts break up the rocks around them to create craters.

Computers can identify a number of other planetary phenomena, too: explosive volcanoes on Mercury, vortexes in Jupiter's thick atmosphere and craters on the moon, to name a few. During the conference, planetary scientist Ethan Duncan, from NASA's Goddard Space Flight Center in Maryland, demonstrated how machine learning can identify not chunks of rock, but chunks of ice on Jupiter's icy moon Europa. The so-called chaos terrain is a messy-looking swath of Europa's surface, with bright ice chunks strewn about a darker background. With its underground ocean, Europa is a prime target for astronomers interested in alien life, and mapping these ice chunks will be key to planning future missions.

Upcoming missions could also incorporate artificial intelligence as part of the team, using this tech to empower probes to make real-time responses to hazards and even land autonomously. Landing is a notorious challenge for spacecraft, and always one of the most dangerous times of a mission.

Reason.com notes NASA's successful completion of its Artemis I mission, calling it "part of NASA's ambitious program to bring American astronauts back to the moon for the first time in half a century. And then on to Mars."

But then they ask if the project is worth the money, with the transportation policy director at the libertarian "Reason Foundation" think tank, Robert W. Poole, arguing instead that NASA "isn't particularly interested in cost savings, and its decision making is overly driven by politics." NASA would have been better off replacing the costly and dated Space Launch System used in the Artemis program. But it didn't. This probably has a lot to do with the fact that it was largely constructed and engineered in Alabama, the home state of Senate Appropriations Committee Chair Richard Shelby, who has a history of strong-arming NASA to preserve jobs for his constituents.
Long-time Slashdot reader SonicSpike shared the article, which ultimately asks whether it'd be faster and cheaper to just rely on private companies: In 2009, the private sector saw one of its biggest champions ascend to become the number two person at NASA. Lori Garver pushed to scrap the Constellation program as a way to entice the private sector to fill in the gaps. She also spearheaded the Commercial Crew Program, which continues to employ commercial contractors to ferry astronauts to the International Space Station. Today, companies like Elon Musk's SpaceX are launching rockets at a faster pace and for a fraction of what NASA spends. In 2022, the company successfully launched 61 rockets, each with a price tag between $100 million and 150 million.

Private companies already design and lease NASA much of its hardware. Poole says there's no reason NASA can't take it a step further and just use the SpaceX starship to cover the entire journey from Earth to the moon and eventually to Mars. "If the current NASA plan goes ahead to have the SpaceX Starship actually deliver the astronauts from the lunar outpost orbit to the surface of the moon and bring them back, that would be an even more dramatic refutation of the idea that only NASA should be doing space transportation," he says.

Poole says that instead of flying its own missions, NASA should play a more limited and supportive role. "The future NASA role that makes the most sense is research and development to advance science," he says.
But for a contrary opinion, Slashdot reader youn counters that "You can bash NASA all you want but a big reason the private sector is where it is at is because it funded research 12 years ago." They share a CNET article noting the $6 billion NASA budgeted over five years "to kick-start development of a new commercial manned spaceflight capability."

And Slashdot reader sg_oneill argues that "Its gonna be a century before we're really colonizing the moon and/or Mars... because we have a lot of science to do first. How do you do a civilization with zero energy inputs from the rest of humanity? How do we deal with radiation? How do bodies work in low G? (Mars is about 1/3 the gravbity of earth). This needs science, and to get science we need NASA, even if private enterprise is building the rockets."

The New York Times cites predictions from American's Defense Department that China could surpass U.S. space capabilities as soon as 2045. "I think it's entirely possible they could catch up and surpass us, absolutely," said the staff director of the United States Space Force. "The progress they've made has been stunning — stunningly fast."

But in a new article this week, the newspaper notes that China recenty sent space probes to the moon and to Mars — and invited foreign media to the launch of its space station in November — and looks back over decades of development: Thirty years ago, the Chinese government initiated a secret plan for its space program, including a key goal of building a space station by 2020. At the time, the country was 11 years from sending its first astronaut into space, and its space efforts were going through a rough patch: Chinese rockets failed in 1991, 1992, 1995 and twice in 1996. The worst failure, in 1996, was a rocket that tipped to the side, flew in the wrong direction and exploded 22 seconds after launch, showering a Chinese village with falling wreckage and flaming fuel that killed or injured at least 63 people.

While grand spaceflight plans of some nations have ended up many years behind schedule, China completed the assembly in orbit of its Tiangong space station in late October, only 22 months later than planned. And on Nov. 29, the Shenzhou 15 mission blasted off from China's Jiuquan Satellite Launch Center deep in the Gobi Desert and took three astronauts to the space station to begin permanent occupancy of the outpost.
The article notes that the U.S. Congress "ended up banning American space agencies in 2011 from spending any money to cooperate in space with China, except in limited circumstances."

But today Zhou Jianping, chief designer of China's crewed space program, asserts that "within a few years, we will be able to achieve the reuse of re-entry capsules for our new generation spaceships." Sending a person to Mars is an even bigger prize for China. It has placed an emphasis on shortening the duration of such a trip, perhaps with nuclear propulsion instead of conventional rocket engines. Officials are also determined that any journey will be a round-trip from which all astronauts return alive and in good health.... With nuclear propulsion, the trip could be trimmed to 500 days, Mr. Zhou said, without predicting whether China would adopt that approach.

Splashdown successful. The announcer on NASA's livestream called it a "text-book entry" for "America's new ticket to ride -- to the moon and beyond."

After flying over 239,000 miles — and 80 miles over the surface of the moon — NASA's uncrewed "Orion" capsule has returned from its 25-and-a-half day test flight in space.

NASA is still streaming its coverage. And CNN had emphasized that "This final step will be among the most important and dangerous legs of the mission." "We're not out of the woods yet. The next big test is the heat shield," NASA Administrator Bill Nelson told CNN in a phone interview Thursday, referring to the barrier designed to protect the Orion capsule from the excruciating physics of reentering the Earth's atmosphere. The spacecraft will be traveling about 32 times the speed of sound (24,850 miles per hour or nearly 40,000 kilometers per hour) as it hits the air — so fast that compression waves will cause the outside of the vehicle to heat to about 5,000 degrees Fahrenheit (2,760 degrees Celsius)....

As the capsule reaches around 200,000 feet (61,000 meters) above the Earth's surface, it will perform a roll maneuver that will briefly send the capsule back upward — sort of like skipping a rock across the surface of a lake.... "By dividing the heat and force of reentry into two events, skip entry also offers benefits like lessening the g-forces astronauts are subject to," said Joe Bomba, Lockheed Martin's Orion aerosciences aerothermal lead, in a statement....

As it embarks on its final descent, the capsule will slow down drastically, shedding thousands of miles per hour in speed until its parachutes deploy. By the time it splashes down, Orion will be traveling 20 miles per hour (32 kilometers per hour). While there are no astronauts on this test mission — just a few mannequins equipped to gather data and a Snoopy doll — Nelson, the NASA chief, has stressed the importance of demonstrating that the capsule can make a safe return.

A Japanese billionaire picked his crewmates for the first-ever artist-centered mission. Space.com reports: Yusaku Maezawa, who made his fortune as an online fashion retailer, announced the eight people who would be flying with him on the dearMoon mission, which aims to use a SpaceX Starship to fly around the moon as soon as next year. "I hope each and every one will recognize the responsibility that comes with leaving the Earth, travelling to the moon and back," Maezawa says in the video in Japanese, with a translation provided in-video.

Riding along with Maezawa will be:
- Steve Aoki, D.J., producer and electronic dance music artist with several Billboard-charting studio albums;
- Tim Dodd, YouTube creator of the "Everyday Astronaut" channel (Dodd has interviewed SpaceX founder Elon Musk multiple times on camera);
- Yemi A.D., artist and choreographer known for his work with JAD Dance Company and with Ye (formerly Kanye West);
- Karim Iliya, photographer whose publications include National Geographic Magazine;
- Rhiannon Adam, a photographer who has been supported by the BBC/Royal Geographical Society and won multiple awards, according to their website;
- Brendan Hall, filmmaker on projects such as the two-hour documentary "Blood Sugar Rising" about diabetes in the United States, according to the Internet Movie Database;
- Dev Joshi, an "Indian television actor known for portraying the role of Baal Veer in Sony Sab's Baal Veer and Baalveer Returns," according to the Internet Movie Database;
- T.O.P., a South Korean rapper known as the lead for the boy band Big Bang;
- Two backup members: dancer Miyu, and snowboarder Kaitlyn Farrington.

Each member of the dearMoon crew was briefly quoted in a video from the dearMoon YouTube channel, and the announcement was confirmed on Dodd's and Maezawa's Twitter feeds.

sciencehabit shares a report from Science Magazine: Fifty years ago today, astronauts aboard Apollo 17, NASA's last crewed mission to the Moon, took an iconic photograph of our planet. The image became known as the Blue Marble -- the first fully illuminated picture of Earth, in color, taken by a person. Now, scientists have re-created that image during a test run of a cutting-edge digital climate model. The model can simulate climatic phenomena, such as storms and ocean eddies, at 1-kilometer resolution, as much as 100 times sharper than typical global simulations.

To re-create the swirling winds of the Blue Marble -- including a cyclone over the Indian Ocean -- the researchers fed weather records from 1972 into the supercomputer-powered software. The resulting world captured distinctive features of the region, such as upwelling waters off the coast of Namibia and long, reedlike cloud coverage. Experts say the stunt highlights the growing sophistication of high-resolution climate models. Those are expected to form the core of the European Union's Destination Earth project, which aims to create a 'digital twin' of Earth to better forecast extreme weather and guide preparation plans.

IEEE Spectrum reports: In October, a startup called Jidu Automotive, backed by Chinese AI giant Baidu and Chinese carmaker Geely, officially released an autonomous electric car, the Robo-01 Lunar Edition. In 2023, the car will go on sale.

At roughly US $55,000, the Robo-01 Lunar Edition is a limited edition, cobranded with China's Lunar Exploration Project. It has two lidars, a 5-millimeter-range radar, 12 ultrasonic sensors, and 12 high-definition cameras. It is the first vehicle to offer on-board, AI-assisted voice recognition, with voice response speeds within 700 milliseconds, thanks to the Qualcomm Snapdragon 8295 chip. "It's a car, and, even more so, a robot," said Jidu CEO Joe Xia, during the live-streamed unveiling of the car (as translated from the Mandarin by CNBC). He added that it "can become the standard for self-driving cars."

But just how autonomous the car is remains to be seen: In January 2022 Baidu and Jidu said the car would have Level 4 autonomous driving capability, which does not require a human driver to control the vehicle. But the press release at the car's launch made no mention of Level 4, saying only that the car offered "high-level autonomous driving...." In September 2022, Baidu cofounder and CEO Robin Li noted that lower levels of autonomy shield car companies from liability in the event of a crash, because the driver is expected to be in control. With Level 4, the manufacturer of the car or the operator of the "robotaxi" service using the car would be to blame....

Regardless of the car's official autonomy designation, Baidu has billed its self-driving package, Apollo, as having Level 4 capabilities. That includes what the company calls a Point-to-Point Autopilot, designed to handle highway, city street, and parking scenarios. Jidu is conducting further tests in Beijing and Shanghai to ensure that its Point-to-Point Autopilot will cover all major cities in China. Chinese regulations do allow Level 4 in robotaxis that operate within designated geofenced areas, and Apollo has already shown what it can do in Baidu's Apollo Go robotaxis, which have delivered more than 1 million rides in at least 10 cities across China.

Baidu recently unveiled its latest autonomous robotaxi, the Level-4 Apollo RT6, which has a detachable steering wheel. The absence of a steering wheel is a statement in itself, and it frees up cabin space for extra seating or even desktops, gaming consoles, and vending machines.
Meanwhile CNBC notes that the four-seat Robo-01 "has replaced the dashboard with a long screen extending across the front of the car and removed cockpit buttons — since the driver can use voice control instead, said Jidu CEO Joe Xia.

"Theoretically, the half-moon of a steering wheel can fold up, paving the way for a cockpit seat with no window obstructions, once full self-driving is allowed on China's roads...." Xia claimed Jidu "can become the standard for self-driving cars...."

Co-investor Geely has pushed into the electric car industry with its own vehicles, and announced in November a multi-year plan to build up the software component of the cars. The automaker said it aimed to commercialize full self-driving under specific conditions, called "Level Four" autonomous driving in a classification system, by 2025.

Tall as a 20-story building, a rocket carrying the Shenzhou 15 mission roared into the night sky of the Gobi Desert on Tuesday, carrying three astronauts toward a rendezvous with China's just-completed space station. From a report: The rocket launch was a split-screen event for China, the latest in a long series of technological achievements for the country, even as many of its citizens have been angrily lashing out in the streets against stringent pandemic controls.The air shook as the huge white rocket leaped into a starry, bitterly cold night sky shortly before the setting of a waxing crescent moon. The expedition to the new space station is a milestone for China's rapidly advancing space program. It is the first time a team of three astronauts already aboard the Tiangong outpost will be met by a crew arriving from Earth. The Chinese space station will now be continuously occupied, like the International Space Station, another marker laid down by China in its race to catch up with the United States and surpass it as the dominant power in space.

With a sustained presence in low-Earth orbit aboard Tiangong, Chinese space officials are preparing to put astronauts on the moon, which NASA also intends to revisit before the end of the decade as part of its Artemis program. "It will not take a long time; we can achieve the goal of manned moon landing," Zhou Jianping, chief designer of China's crewed space program, said in an interview at the launch center. China has been developing a lunar lander, he added, without giving a date when it might be used. The launch of Shenzhou 15 comes less than two weeks after NASA finally launched its Artemis I mission following many delays. That flight has put its uncrewed Orion capsule into orbit around the moon.

An anonymous reader quotes a report from the BBC: The US space agency's Orion capsule has reached a key milestone on its demonstration mission around the Moon. On Monday, it moved some 430,000km (270,000 miles) beyond the Earth -- the furthest any spacecraft designed to carry humans has travelled. The ship is uncrewed on this occasion, but if it completes the current flight without incident, astronauts will be on the next outing in two years' time. [...] The previous record for the most distant point reached by a human-rated spacecraft was set by the Apollo-13 mission in April 1970. It went out to 400,171km (248,655 miles) from Earth as its crew fought to navigate their way home following an explosion in their capsule's service module. Monday's milestone marks the middle point of the mission. "This halfway point teaches us to number our days so that we can get a heart of wisdom," said Mike Sarafin, Nasa's Artemis mission manager.

"The halfway point affords us an opportunity to step back and then look at what our margins are and where we could be a little smarter to buy down risk and understand the spacecraft's performance for crewed flight on the very next mission."

Long-time Slashdot reader destinyland writes: A new book identifies "26 Lines of Code That Changed the World." But its cheeky title also incorporates a comment from Unix's source code — "You are Not Expected to Understand This". From a new interview with the book's editor:

With chapter titles like "Wear this code, go to jail" and "the code that launched a million cat videos," each chapter offers appreciations for programmers, gathering up stories about not just their famous lives but their sometimes infamous works. (In Chapter 10 — "The Accidental Felon" — journalist Katie Hafner reveals whatever happened to that Harvard undergraduate who went on to inadvertently create one of the first malware programs in 1988...) The book quickly jumps from milestones like the Jacquard Loom and the invention of COBOL to bitcoin and our thought-provoking present, acknowledging both the code that guided the Apollo 11 moon landing and the code behind the 1962 videogame Spacewar. The Smithsonian Institution's director for their Center for the Study of Invention and Innovation writes in Chapter 4 that the game "symbolized a shift from computing being in the hands of priest-like technicians operating massive computers to enthusiasts programming and hacking, sometimes for the sheer joy of it."

I contributed chapter 9, about a 1975 comment in some Unix code that became "an accidental icon" commemorating a "momentary glow of humanity in a world of unforgiving logic." This chapter provided the book with its title. (And I'm also responsible for the book's index entry for "Linux, expletives in source code of".) In a preface, the book's editor describes the book's 29 different authors as "technologists, historians, journalists, academics, and sometimes the coders themselves," explaining "how code works — or how, sometimes, it doesn't work — owing in no small way to the people behind it."

"I've been really interested over the past several years to watch the power of the tech activists and tech labor movements," the editor says in this interview. "I think they've shown really immense power to effect change, and power to say, 'I'm not going to work on something that doesn't align with what I want for the future.' That's really something to admire.

"But of course, people are up against really big forces...."

About an hour ago SpaceX began tweeting video highlights of their latest launch — a NASA-commissioned resupply mission for the International Space Station.

- "Liftoff!"

- "Falcon 9's first stage has landed on the Just Read the Instructions droneship"

- "Dragon separation confirmed; autonomous docking to the Space Station on Sunday, November 27 at ~7:30 a.m. ET"

You can watch the whole launch on SpaceX's web site. But CNN explains that SpaceX "has launched more than two dozen resupply missions to the space station over the past decade as part of a multibillion-dollar deal with NASA. This launch comes amid SpaceX's busiest year to date, with more than 50 operations so far, including two astronaut missions."

And yet this one carries something unique. (And it's not just the Thanksgiving-themed treats and solar arrays to boost the space station's power...) Nutrients are a key component of maintaining good health in space. But fresh produce is in short supply on the space station compared with the prepackaged meals astronauts eat during their six-month stays in low-Earth orbit. "It is fairly important to our exploration goals at NASA to be able to sustain the crew with not only nutrition but also to look at various types of plants as sources for nutrients that we would be hard-pressed to sustain on the long trips between distant destinations like Mars and so forth," said Kirt Costello, chief scientist at NASA's International Space Station Program and a deputy manager of the ISS Research Integration Office.

Astronauts have grown and tasted different types of lettuce, radishes and chiles on the International Space Station. Now, the crew members can add some dwarf tomatoes — specifically, Red Robin tomatoes — to their list of space-grown salad ingredients. The experiment is part of an effort to provide continuous fresh food production in space.... The space tomatoes will be grown inside small bags called plant pillows installed in the Vegetable Production System, known as the Veggie growth chamber, on the space station. The astronauts will frequently water and nurture the plants....

The hardware is still in development for larger crop production on the space station and eventually other planets, but scientists are already planning what plants might grow best on the moon and Mars. Earlier this year, a team successfully grew plants in lunar soil that included samples collected during the Apollo missions. "Tomatoes are going to be a great crop for the moon," Massa said. "They're very nutritious, very delicious, and we think the astronauts will be really excited to grow them there."

Longtime Slashdot reader BenFenner writes: While Chromium recently abandoned the JPEG-XL format (to much discussion on the feature request), it seems the Pale Moon browser quietly became the first to release support for the much-awaited image format. For those unfamiliar with Pale Moon, it is a Goanna-based web browser available for Windows, Linux and Android, focusing on efficiency and ease of use. Pale Moon 31.4.0 also adds support for MacOS 13 "Ventura" and addresses a number of performance- and security-related issues. A full list of the changes/fixes are available in the release notes.

Support for JPEG-XL was confirmed on GitHub.

SonicSpike shares a report from Futurism: It appears that NASA's Artemis 1 rocket launch pad caught way more damage than expected when it finally took off from Kennedy Space Center last week. As Reuters space reporter Joey Roulette tweeted, a source within the agency said that damage to the launchpad "exceeded mission management's expectations," and per his description, it sounds fairly severe.

"Elevator blast doors were blown right off, various pipes were broken, some large sheets of metal left laying around," the Reuters reporter noted in response to SpaceNews' Jeff Foust, who on Friday summarized a NASA statement conceding that the launchpad's elevators weren't working because a "pressure wave" blew off the blast doors. Shortly after the launch, NASA acknowledged that debris was seen falling off the rocket, though officials maintain that it caused "no additional risk" to the mission. In spite of those sanguine claims, however, reporters revealed that NASA seemed very intent on them not photographing the Artemis launch tower -- and now, with these preliminary reports about how messed up it seems to have gotten, we may know why.

Nasa's Orion capsule reached the moon on Monday, whipping around the back side and passing within 80 miles of the surface on its way to a record-breaking lunar orbit. From a report: The close approach occurred as the crew capsule and its three test dummies were on the far side of the moon. Because of the half-hour communication blackout, flight controllers in Houston did not know if the critical engine firing went well until the capsule emerged from behind the moon, more than 232,000 miles from Earth.

It's the first time a capsule has visited the moon since Nasa's Apollo program 50 years ago, and represented a huge milestone in the $4.1bn test flight that began last Wednesday after Orion launched into space atop the massive Artemis rocket. Orion's flight path took it over the landing sites of Apollo 11, 12 and 14 -- humankind's first three lunar touchdowns. The moon loomed ever larger in the video beamed back earlier in the morning, as the capsule closed the final few thousand miles since blasting off last Wednesday from Florida's Kennedy Space Center, atop the most powerful rocket ever built by Nasa. "This is one of those days that you've been thinking about and talking about for a long, long time," flight director Zeb Scoville said while waiting to resume contact. As the capsule swung out from behind the moon, onboard cameras sent back a picture of Earth, a blue dot surrounded by blackness.

The Guardian notes that "While leap seconds pass by unnoticed for most people, they can cause problems for a range of systems that require an exact, uninterrupted flow of time, such as satellite navigation, software, telecommunication, trade and even space travel."

So now Nature magazine reports that "The practice of adding 'leap seconds' to official clocks to keep them in sync with Earth's rotation will be put on hold from 2035, the world's foremost metrology body has decided." The decision was made by representatives from governments worldwide at the General Conference on Weights and Measures (CGPM) outside Paris on 18 November. It means that from 2035, or possibly earlier, astronomical time (known as UT1) will be allowed to diverge by more than one second from coordinated universal time (UTC), which is based on the steady tick of atomic clocks. Since 1972, whenever the two time systems have drifted apart by more than 0.9 seconds, a leap second has been added....

Facebook's parent company, Meta, and Google are among the tech companies that have called for leap seconds to be scrapped. The CGPM — which also oversees the international system of units (SI) — has proposed that no leap second should be added for at least a century, allowing UT1 and UTC to slide out of sync by about 1 minute. But it plans to consult with other international organizations and decide by 2026 on what upper limit, if any, to put on how much they be allowed to diverge....

Although in the long term Earth's rotation slows due to the pull of the Moon, a speed-up since 2020 has also made the issue more pressing, because for the first time, a leap second might need to be removed, rather than added. UTC has only ever had to slow a beat to wait for Earth, not skip ahead to catch up with it. "It's kind of being described as a Y2K issue, because it's just something that we've never had to deal with," said Elizabeth Donley, who leads the Time and Frequency division at the National Institute of Standards and Technology, in Boulder, Colorado.

NASA's Artemis 1 rocket blasted off the Kennedy Space Center in the early hours of Wednesday, "lighting up the night sky and accelerating on a journey that will take an astronaut-less capsule around the moon and back," reports the New York Times. From the report: At around 1:47 a.m. Eastern time, the four engines on the rocket's core stage ignited, along with two skinnier side boosters. As the countdown hit zero, clamps holding the rocket down let go, and the vehicle slipped Earth's bonds. A few minutes later, the side boosters and then the giant core stage dropped away. The rocket's upper engine then ignited to carry the Orion spacecraft, where astronauts will sit during later missions, toward orbit. Less than the two hours after launch, the upper stage will fire one last time to send Orion on a path toward the moon. On Monday, Orion will pass within 60 miles of the moon's surface. After going around the moon for a couple of weeks, Orion will head back to Earth, splashing down on Dec. 11 in the Pacific Ocean, about 60 miles off the coast of California.

This flight, evoking the bygone Apollo era, is a crucial test for NASA's Artemis program that aims to put astronauts, after five decades of loitering in low-Earth orbit, back on the moon. For NASA, the mission ushers in a new era of lunar exploration, one that seeks to unravel scientific mysteries in the shadows of craters in the polar regions, test technologies for dreamed-of journeys to Mars and spur private enterprise to chase new entrepreneurial frontiers farther out in the solar system. [...] The launch occurred years behind schedule, and billions of dollars over budget. The delays and cost overruns of S.L.S. and Orion highlight the shortcomings of how NASA has managed its programs. The next Artemis mission, which is to take four astronauts on a journey around the moon but not to the surface, will launch no earlier than 2024. Artemis III, in which two astronauts will land near the moon's south pole, is currently scheduled for 2025, though that date is very likely to slip further into the future. NASA posted a video of the liftoff on their Twitter. Additional updates are available @NASA_SLS.